Storm-sash fastener.



0. PI BEMIS.

STORM SASH FASTBNBR.

APPLICATION rum) MAY a1, 1013.

1,096,81 1 Patented May 12,1914.

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CHARLES F. BEMIS, OF MINNEAPOLIS, MINNESOTA.

STORM-SASH FASTENER.

Specification of Letters Patent.

Patented May 12, 1914.

Application filed May 31, 1913. Serial No. 770,846.

To all whom it may concern Be it known that I, CHAnLns F. Beans, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented a new and useful Improvement in Storm-Sash Fasteners, of which the following is a specification.

The object of this invention is to provide a storm sash fastener which is simple and inexpensive in construction and which is adapted to open a storm sash automatically by the opening of one of the slidable window sashes. WVhile primarily intended for such operation my improved fastener may be used to hold the storm sash open irrespective of the movement of the slidable window sashes whereby ventilation may be secured through the window casing by opening the upper slidable window sash.

By the use of my invention the storm sash is adapted to be held in open position without rattling in the wind and is further adapted to be held closed and locked in tight condition to prevent air from entering through the window casing when the lower slidable window sash is closed. My improved fastener is further adapted to be easily and quickly attached for use and dc tachod when not in service.

In the accompanying drawing forming part of this specification, Figure 1 is a vertical transverse section when the storm sash is open; Fig. 2 is a similar view when the storm sash is closed, the broken line position of the sash and its fastener indicating the open position; Fig. 3 is an enlarged detail illustrating the fastener, and Figs. 4, 5 and 6 are fragmentary detail views of parts of my improved fastener.

In the drawing A represents the window casing, B and C, two window sashes which are mounted in said-casing and adapted to slide vertically in the usual manner and D a storm sash which is adapted to be hinged to the upper portion of the casing A by separable hingcs 2 of the usual construction, whereby the storm sash is adapted to swing in and out at its lower end either to close the window casing or open it as illustrated in Figs. 1 and 2. The storm sash is adapted to be held in closed and open positions by means of my improved fasteners such as E, one or more being employed and disposed on either side of the casing. Each of the fas-' teners employed consists of a pair of levers S and l of equal length, said levers being pivoted together at their ends and to a link 5 by means of the pivot bolt 6. The free ends of the levers 3 and i from the pivot connection are respectively fastened to the side of the window casing and to the lower slidable window sash by pivot connections at 7 and 8. The pivot connection 7 as illustrated is in the form of a screw passing permanently into the side of the casing and the pivot connection 8 is in the form of a button 5) mounted upon the bracket 10 which is adapted to be fastened to the lower slidable window sash by means of screws or nails 11. The end of the lever i is provided with a longitudinal slot 12 through which said lever may be passed into engagement below the button 9. The free end of the link 5 is pivotally secured by the fastening 13 to the inner surface of the storm sash D, and as the lower slidable window sash is raised or lowered the storm sash D is moved outwardly or swung in and closed automatically in the window casing, the open and closed positions being clearly illustrated in Figs. 1 and 2 of the drawings. The three parts 3, 4: and 5 in effect are three toggle levers or links pivoted together at a common point, the free end of lever 3 being permanently secured to the window casing, the free end of lever 4 being detachably secured to the lower slidable window frame and the free end of lever 5 permanently secured to the storm sash. The operation of opening and closing the storm sash is thus automatic with the opening and closing of the lower slidable window sash. The toggle lovers 3 and tco-acting with the link 5 produce a strong leverage upon the storm sash during the movement of the lower slidable window sash.

When it is desired to hold the storm sash in open position permanently irrespective of the movement of the lower slidable window sash, the lever 4: may be detached from its pivot connection 8 by turning the button 9 and withdrawing the lever 4; through the slot 12. The slotted end of lever 41: may then be connected to the window sash in permanent position by engaging the lever over a button such as 14- secured on the side of the window casing by means of the screw 15. The full line position shown in Fig. 1 illustrates the storm sash rigidly secured to the window casing to hold the storm sash in open position. When used in this manner Having described my invention, what I claim as new and desire to protect by Let ters Patent is:

1. The combination with a window casing, a window sash slidable in said casing, a storm sash hinged on said casing and a fastener for said storm sash comprising three links pivoted together at a common point, the free end of one link being secured to said window casing, the free end of another link secured to said storm sash and. a free end. of the remaining link secured to saidslidable window sash whereby the movement of said slidable window sash in Copies of this'patent may be obtained for five cents. each, by addressing the Commissioner of Patents,

and down a storm sash hinged on said cass ing to swing out at its lower end and a fastener comprising three links p voted together at a common point, the free end of T one link being pivoted to said window casing, the free end of another link being pivoted tosaid storm sash and the free end of the remaining link being adapted to be-detachably secured either to said lower slidable window sash or to said window casing, whereby said storm sash may be made to open and close automatically with the opening and closing of said lower slidable window sash or said storm sash may be rig,-

idly held in open position free of the movement of said lower slidable window sash.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses.

CHARLES F. BEMIS. Vvitnesses A. L. FISCHER, S. L. VVASGHENBERGER.

Washington; D. G. 

